The Milestone UltraWAVE
The Milestone UltraWAVE
At the heart of the UltraWAVE is a Teflon-lined 1 liter stainless steel reaction chamber, which serves both as a microwave cavity and a reaction vessel.
Samples are weighed into vials, and suitable reagents are added. Vials are placed in a rack, which is automatically lowered into the reaction chamber. The chamber is sealed and pre-pressurized with inert gas, which physically acts as a cap for the vials, avoiding boiling of the solutions and preventing cross contamination. At the completion of the microwave run, a built-in cooling device rapidly lowers the temperature.
The UltraWAVE is operated via a compact control terminal with easy-to-read, bright, full-color, touch- screen display. Hundreds of applications, including all US EPA methods, are preloaded in the UltraWAVE terminal.
The terminal is provided with multiple USB and RS-232 ports for direct printout of microwave methods and runs, and for interfacing the instrument to external peripherals.
The terminal runs the Milestone’s unique multi-language EasyCONTROL software, to provide simple, user-friendly control of the microwave sample preparation process. Simply recall a factory-stored method or create a new one; press ‘START’ and the system will automatically follow the user defined temperature or pressure profile, utilizing a sophisticated PID algorithm to regulate the microwave power.
Any combination of sample types can be digested simultaneously. Any type of acids can be used. The UltraWAVE operates up to 199 bar pressure and 300°C. Unlike traditional microwave digestion systems, every sample is under direct temperature and pressure control. This eliminates the reliance on a reference vessel or indirect control such as infrared temperature sensors, assuring complete control of the digestion process in every sample.
All sample types are digested at the same temperature and pressure even with different acid mixtures and volumes. With the UltraWAVE’s Automatic Gas Module, nitrogen loading is reduced to a “single click” operation. Pressure is loaded directly through the UltraWAVE terminal, eliminating the opening and closing of stand-alone tanks.
A thick acrylic shield with integrated exhaust surrounds the work area, lowering into position automatically as the chamber is closed. The PID controller monitors temperature 20 times per second, ensuring the UltraWAVE achieves the set temperature and immediately reacts to exotherms.
At the completion of the microwave run, the UltraWAVE’s built-in water cooling system enables the temperature to lower from 270°C to 80°C in just 12 minutes. Once the system reaches the set cooling temperature, pressure is automatically released from all samples simultaneously.
Lower Operating Costs
No vessel assembly is required, vessel cleaning eliminated with disposable glass vials, and method development virtually eliminated. Simplified construction provides for significant consumables savings over traditional rotor based systems.